even, composite · 280th positive integer
The number 280
280 is an even composite number. It is the 280th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 5 × 7 |
| Divisors | 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280 |
| Binary | 100011000 |
| Hexadecimal | 0x118 |
| Roman numeral | CCLXXX |
| Digit sum | 10 |
| Properties | even, composite |
Frequently asked
Is 280 a prime number?
No. 280 is composite. Its prime factorization is 2 × 2 × 2 × 5 × 7.
What are the factors of 280?
The factors (divisors) of 280 are 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280.
What is 280 in binary?
280 in binary is 100011000. In hexadecimal it's 118.
What is 280 as a Roman numeral?
280 in Roman numerals is CCLXXX.
What's the digit sum of 280?
Adding the digits of 280: 2 + 8 + 0 = 10.